Microwave assisted synthesis & properties of nano HA-TCP biphasic calcium phosphate

• 作 者: E.Ghomash Pasand A.Nemati M.Solati-Hashjin K.Arzani A.Farzadi
• 机 构: Department of Materials Engineering,Science and Research Branch,Islamic Azad University,Tehran 14778
• 出 处: International Journal of Minerals Metallurgy and Materials
• 发表日期: 2012年05期
• 关键词: bioceramics calcium phosphate hydroxyapatite (HA) tricalcium phosphate nanoparti

Biphasic calcium phosphate(BCP) nanopowders were synthesized by using microwave and non-microwave irradiation assisted processes.The synthesized powders were pressed under a pressure of 90 MPa,and then were sintered at 1000-1200°C for 1 h.The mechanical properties of the samples were investigated.The formed phases and microstructures were characterized by X-ray diffraction(XRD) and scanning electron microscopy(SEM).The results showed that the synthesis time was shorter,along with a more homogeneous microstructure,when the microwave irradiation assisted method was applied.The compression strength and the Young’s modulus of the samples synthesized with microwave irradiation were about 60 MPa and 3 GPa,but those of the samples synthesized without microwave irradiation were about 30 MPa and 2 GPa,respectively.XRD patterns of the microwave irradiation assisted and non-microwave irradiation assisted nanopowders showed the coexistence of hydroxyapatite(HA) and tricalcium phosphate(TCP) phases in the system.

Biphasic calcium phosphate (BCP) nanopowders were synthesized by using microwave and non-microwave irradiation assisted processes. The specific powders were pressed under a pressure of 90 MPa, and then were sintered at 1000-1200 ° C for 1 h. The mechanical properties of the samples were investigated. The formed phases and microstructures were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results showed that the synthesis time was shorter, along with a more homogeneous microstructure, when the microwave irradiation assisted method was applied. The compression strength and the Young’s modulus of the samples synthesized with microwave irradiation were about 60 MPa and 3 GPa, but those of the samples analyzed without microwave irradiation were about 30 MPa and 2 GPa, respectively. XRD patterns of the microwave irradiation assisted and non-microwave irradiation assisted nanopowders showed the coexistence of hydroxyapatite (HA) and tricalcium phosphate (TCP) phase s in the system.